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[SCIRUN-USERS] Re: ConvertFieldDataType may not be working

Chronological Thread 
  • From: "Ayla Khan" <>
  • To: Ashu Chaturvedi <>
  • Cc:
  • Subject: [SCIRUN-USERS] Re: ConvertFieldDataType may not be working
  • Date: Thu, 23 Feb 2012 15:20:22 -0700

Hi Ashu,

We found the bug, patched and rebuilt SCIRun v4.5. The 64-bit OS X binary installer is available on the SCIRun download page, and the 32-bit binary installer will be up shortly. Thank you for reporting this bug and let us know if you run into any more problems.


On Thu, 23 Feb 2012 17:10:49 -0500
 Ashu Chaturvedi <> wrote:
Hi Ayla,

I was wondering if you had any updates regarding this bug?  Thanks,

--Ashu Chaturvedi

On Feb 17, 2012, at 6:30 PM, Ayla Khan wrote:

Hi Ashu,

I was able to reproduce your bug, and I'm looking into the differences between the modules in SCIRun v3.0.2 and the latest version.


On Feb 16, 2012, at 2:22 PM, Ashu Chaturvedi wrote:


I have a simple SCIRun network which reads in two input files and solves for the FEM voltage solutions in space. In SCIRun v3.0.2 the solutions converge correctly in the SolveLinearSystem module. However, in SCIRun v4.5 they do not; in fact, the cumulative error goes off to infinity.

I have narrowed down the problem to the ConvertFieldDataType module. When I use the v4.5 module, further downstream I get a warning inside ApplyFEMVoltageSource that says:
"WARNING: (BioPSE_Forward_ApplyFEMVoltageSource_0) The input field doesn't contain Dirichlet boundary conditions."

This warning does not appear in the v3.0.2 ApplyFEMVoltageSource module.

In v4.5, when I read in the saved output from the ConvertFieldDataType module from v3.0.2, that warning does not appear and the FEM solutions converge correctly in v4.5.

You can download (87 mb) the example network and data which depicts this problem:

Thanks in advance for your help!

--Ashu Chaturvedi

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